Title takes you the Argiriadis Analogue Electronics website. There is a link to
this video on YouTube on vacuum tubes. It's an amazing video in which Theo Argiriadis goes into detail on the desing and characterstics of the sound. Synth content in the video includes some rhythms and sequences running through the vacuum tube. Great video. Found this one on
Digital Music Mag.

Notes on the video:
"Theo's an electronics engineer, working in North London and specialising in valves (vacuum tubes). He makes and modifies quality hi-fi, and unique, stunning audio processors. His workshop's amazing too, so after he built me the most detailed distortion box I've ever seen, I asked if I could make a film about him and his work. Contact Theo through www.tube-electronics.co.uk, or me at film@museumoftechno.org"
Update via the comments:
"Hey, thanks for featuring the film! And for using that primo still as the preview... the pale box with the red controls at top right is my distort unit, which is how I got to know Theo.
If any UK MatrixSynth readers are seriously into their valves, and want a totally different and valuable experience buying a piece of beautiful equipment, do have a think about Theo - he says he's not an artist, but there's some deep Macedonian voodoo mixed up with his science!"
Thank you! That truly was an awesome video.